138 ANIMAL ECOLOGY 



1902. Stufenfange echter Spinnen am Riesengebirge. (Eine 



vergleichend ethologische Studie.) Sitz.-Ber. Ges. 

 naturf. Freunde zu Berlin, 1902, pp. 185-203. 

 A comparative study of the habitats of spiders. 



1903. Winke fur ein wissenschaftliches Sammeln von Thieren. 



Sitzungs-Ber. der Gesell. naturf or. Freunde zu Berlin, 



1903, pp. 444-475. 

 Gives a classification of animal habitats, associations, 



and a brief history of their recognition by zoologists. 



Compare the habitats with those given by Shelf ord, 



Physiological Animal Geography, 1911. 

 1893. Untersuchungen liber die Thierwelt der Unterelbe. 



Sechster Ber. Komm. zur Wissenschaft. Untersuch. 



der deutschen Meere in Kiel, Jahrg. XVH-XXI, 



Heft III, pp. 151-185. Berlin. 

 Lists the fauna of the brackish waters of the lower 



Elbe River, discusses their relation to the environment 



(salinity, etc.) and gives quantitative determinations 



of its frequency per square meter, as determined by 



digging at low tide. 



MEYER, H. A., and MOBIUS, K. 



1865. Fauna der Kieler Bucht. Bd. I. Leipzig. 



Not seen by writer. 

 LOCARD, A. 



1881. De L'Habitat des Mollusques. pp. 88-128. Etudes 

 sur les Variations Malacologiques d'apres la Faune 

 Vivante et Fossile de la Partie Centrale du Bassin 

 du Rhone. Tome II, Paris et Lyon. 

 This is the most detailed study and classification of 

 the habitats of mollusks of land and fresh-water which 

 the writer has seen. It seems to be little known to 

 students. The volume contains many ecological ob- 

 servations. The classification of habitats is often 

 very artificial. See Von Marten's comment (Zob'l. 

 Record for 1881, Vol. XVIII, p. 18, Moll.), which 

 refers to English and German works along similar 



